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Nebraska City News-Press - Nebraska City, NE
  • Corps reports near normal April runoff in the Missouri River basin

  • The U.S. Army Corps of Engineers (Corps) Missouri River Basin Water Management Division reports April runoff in the Missouri River basin above Sioux City, Iowa was 2.8 million acre feet (MAF), 96 percent of normal. The 2014 runoff forecast in the Missouri River basin above Sioux City, Iowa has decreased slightly from 32 MAF last month to 31.7 MAF, 125 percent of normal. Average annual runoff is 25.2 MAF.
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  • The U.S. Army Corps of Engineers (Corps) Missouri River Basin Water Management Division reports April runoff in the Missouri River basin above Sioux City, Iowa was 2.8 million acre feet (MAF), 96 percent of normal.  The 2014 runoff forecast in the Missouri River basin above Sioux City, Iowa has decreased slightly from 32 MAF last month to 31.7 MAF, 125 percent of normal.  Average annual runoff is 25.2 MAF.
    “April inflows were less than previously forecasted, and the reservoirs continue to be well positioned to capture the expected above-normal runoff,” said Jody Farhat, chief of the U.S. Army Corps of Engineers Missouri River Basin Water Management Division.  “The total volume of water stored in the reservoir system on May 1 was 54.3 MAF.  System storage remains below the base of the annual flood control and multiple use zone of 56.1 MAF.”     
    According to information from the Natural Resources Conservation Service, the mountain snowpack accumulation appears to have peaked in both the reach above Fort Peck Dam and the reach between Fort Peck and Garrison Dams.  Mountain snowpack typically peaks in mid-April. “This year’s mountain snowpack was tracking the levels recorded in 2011 through early April, but has since dropped off the pace, and is now declining,” said Farhat.  Mountain snowpack in the reach above Fort Peck Dam peaked on April 7 at 132 percent of the normal peak; as of May 6, it was 112 percent of the normal peak.  In the reach between Fort Peck and Garrison Dams, the mountain snowpack peaked on April 17 at 140 percent of the normal peak; as of May 6 it was 116 percent.  Runoff from the melting mountain snowpack enters the reservoir system from May through July.  The latest National Weather Service flood outlook shows the potential for minor to moderate flooding along tributaries in the headwaters areas of Montana and Wyoming as a result of the snowmelt. However, the reservoir system has sufficient storage to capture the runoff, and release it through the remainder of the season at rates that are well within the channel.
    Read more at: http://www.nwd.usace.army.mil/Media/NewsReleases/tabid/1989/Article/484623/corps-reports-near-normal-april-runoff-in-the-missouri-river-basin.aspx.
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